Transformer gin



C. N- DUNN TRANSFORMER GIN Jan. 13, 1953 Filed Sept. 29, 1950 INVENTOR.

CAR/P 0L 4 A/ DUNN A 7' 7'0 RNA-"K9 Patented Jan. 13, 1953 UNITED S TATES r T 'OFFIEEL TRANSFORMER GIN Carroll .N, Dunn, Washougal, Wash,

Application September 29, 1950, Serial'No. 187,643-

2. Claims.

This. ix-lvent-ion relates-to hoist supports, and mereparticularly to ahoist support for use on a pole r. raising transformers or other heavyobjects ontothe pole.

Amai n object of the invention is to providea novel and improved hoistsupportior-useon poles whichxissimp'le in-construction, which is easy toinstall, and which is foldable to a very compact unit for transportationor storage.

A further objector the invention is to provide an improved hoist supportfor use on poles for elevating transformers or other heavy objects ontothe poles, the hoist device being inexpensive to manufacture,involving'only a few parts, being practical, for. installation. .by-onepe on, and eings eadily' adjustab e o ny-desired p sition in accordancewith thesize oi heobiect to 'belift d- Further :o je tsand advan a e fheinvention will become apparent from the following description andclaims, and from the accompanying drawings, wherein:

Figure 1 is a front elevational view of the upper portion of a poleshowing an improved hoist device according to the present inventionmounted on the crossarm of the pole in operative position;

Figure 2 is a transverse vertical cross-sectional view taken through theupper portion of the crossarm of the pole of Figure 1, showing theimproved hoist device of the present invention in side elevation;

Figure 3 is a top plan view of the structure of Figure 1;

Figure 4 is an elevational view of the improved hoist device of thepresent invention shown in folded, inoperative position, the parts beingshown separated;

Figure 5 is an enlarged cross-sectional detail view taken on line 55 ofFigure 4;

Figure 6 is an enlarged cross-sectional detail view taken on line 66 ofFigure 4;

Figure 7 is a top plan view, similar to Figure 3, but showing a modifiedform of hoist device in accordance with the present invention.

Referring to the drawings, the hoist support is designated generally atH and comprises a flat, arcuately-shaped bracket member 12 to the endsof which are pivotally secured the respective rigidarms l3, l3. Asshown, each arm I3 is provided with a cylindrical cap member [4 at oneend and another cup-like cylindrical member I5 at the other end. Theintermediate portion of the arm may comprise any suitable material, suchas oak or other sturdy material, the ends of the intermediate memberbeing secured in the respective cap elements l4 and I5. The members Mare formed with-the-spaced parallel apertured lugs l6, it between whichare received the re spective-ends of thearcuate bracket memben-l 2,asshown in Figurefi. Designated at IiQ' lS azushaped'bolt member whoseends pass respectively.

through: the lugs. i6, .lfiandthe intervening-end of bracket member 12-at. each-end of thebIaflket member, as shown in Figure 6,; Respective'nuts ;l.8;xl8;are.threa ded on the ends of the U..-shap'ed bolt,,memoerI17; Rotatably, and slidablyxmountzed onthebo'ltmember If! is :a'pulley1 9, said ulley being, frictionally. secured onv the 'bolt'member. indesired adjusted position by. a spring-pressed ball 213 provided inaradial bore 2 I; in the pulley and-arrangedtoprojectinto .thecentraiaperture of the pulley and frictionaliy. engagecthe-ibolt ll.

Designated at 22, 22 -are respective-shoemembers which are -L-shaped, incross-section and which are connected to the respective cap meme bers l5by ball-and-socket joints 23. As shown in Figures 1 and 2, the L-shapedshoe members 22 are adapted to be placed on the top edges of a crossarm24 of a pole 25 when the hoist support is set up for use.

Designated at 26 is a chain, one end of the chain being provided with ahooked link 21 adapted to be engaged with an eye 28 secured to themid-portion of the arcuate bracket member I2. The other end of the chainis provided with a hooked link 29 adapted to be engaged with anintermediate link of the chain 26 to secure the chain around the upperportion of the pole 25 in the manner shown in Figures 1, 2 and 3. Whenthus secured, the chain supports the remainder of the hoist gin ininclined position, as shown in Figure 2. A cable 30 is engaged over thepulley l9 and may be employed for raising a transformer or other heavyobject upwardly on the pole.

In installing the hoist device, it is merely necessary to secure thechain around the upper portion of the pole in the manner shown in Figure2, and then to place the shoe elements 22, 22 on the crossarm 24 of thepole in symmetrically spaced relationship with respect to the pole andwith the arms [3, [3 arranged in upwardly convergent, inclinedpositions, as clearly shown in Figures 1 and 2. The hooked link 21 ofthe chain 26 is, of course, engaged with the eye 28 to support thedevice in the position shown in Figures 1 to 3. The pulley I9 is movedto a centered position on the bolt I1 and the cable 30 is engaged aroundthe pulley, whereby the device is ready for use. In view of theprovision of the bolt-and-socket joints 23, 23, the shoe members 22, 22are readily adjustable on the crossarm 24 and allow the arms l3, l3 tobe disposed at desired angles of inclination.

Referring now to Figure 7, a modified form of the hoist-supportingdevice is disclosed, and adapted to be employed on poles which are notprovided with crossarms. In the modified form of the invention shown inFigure 7, respective collars 3!, 3i are securely clamped to thintermediate portions of the respective arms i3, I3 and a short lengthof chain 32 is connected to the respective collars 3i, 3! as clearlyshown in Figure '7, In using the device, the arms l3, l3 are arranged toreceive the pole 25 between them with the chain 32 bearing against thpole, as shown in Figure 7. The chain 26 is engaged around the pole andthe free portion of the chain is connected to the eye 28 in the samemanner as previously described. In Figure 7, the chain 32 supports thedevice in the same manner as the crossarm 24 and th shoes 22, 22 supportthe device in the previously described embodiment of the invention.

,When the device is not in use, it may be folded to a relatively compactsize and the chain 26 may be detached therefrom, as shown for example inFigure 4, whereby the parts of the device may be readily transported orstored.

While certain specific embodiments of an improved hoist support for use:on poles have been disclosed in the foregoing description, it will beunderstood that various modifications within the spirit of the inventionmay occur to those skilled in the art. Therefore, it is intended that nolimitations be placed on the invention except as defined by the scope ofthe appended claims,

What is claimed is:

l. A hoist support of the character described comprising a rigid bracketmember, a pair of rigid arms pivotally connected to the respectiveopposite ends of said bracket member, an L- shaped shoe member pivotallyconnected to the free end of each rigid arm for universal rotationaladjustment with respect to said arms, the shoe members being adapted toengage the top edges of the crossarm of a pole on opposite sides of thepole, a U-shaped bolt secured at its ends to said bracket member, apulley rotatably and slidably mounted on said bolt, and a flexiblefastening member adapted to be secured around the pole, one end of saidfastening member being secured to said bracket member.

2. A hoist support of the character described comprising a rigid bracketmember, a pair of rigid arms pivotally connected to the respectiveopposite ends of said bracket member, a collar fixedly secured to eacharm intermediate its ends, a chain extending between and connected tosaid collars, said collars and chain being adapted to supportinglyreceive a pole, a U-shaped bolt arranged transversely of said bracketmember and secured at its ends to the latter, a pulley rotatably andslidably mounted on said bolt, and a flexible fastening member adaptedto be secured around the pol and having one end secured to said bracketmember.

CARROLL N. DUNN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 782,103 Bruner Feb. 7, 1905788,449 Bouquet et al. Apr. 25, 1905 1,123,882 Jensen Jan. 5, 19151,264,261 Blankenship Apr. 30, 1918

